Excavating device



March 4 i924 J. W. PAGE EXGAVATING DEVICE AFiled Nov. 24. '1922 2 Shees-Sheez Filed NV. 24. 2 Sheets-Sheet, 2 i

elevation of the samel sheaveshowing the To all z't'mcy concern.' I'

v citizen. of the United States, residing l atl Patented Magni, 1924. .y

' UNITED STATES- Joan wQPAGE, oF CHICAGO, ILLINOIS.

' nXcAvArrNG DEvrcE.

' Apliiicmon ined November 241922. semi No. 602,968.

Be it knownl tha t"I', JOHN W. Paca-a Chicago, 'in the county of Cookand State of Illinois, have invented a new and'useful Improvement in Excavating Devices, of which the following is-a'specification.

This invention relates to certainnew and useful'improvements in excavating devices,

pointed out herein. 1

and Ais fully described and explained -in thespecification'and shown in `the accompanying drawings, inwhich Figure 1 is a view in side elevation, showing 'the bucket, on'- the trolley, Fig. 2 is a similar view showing the bucket in the position it loccupies just'after the shea've 18 has engaged the stop block V19, Fig. 3 is a similarview showingthe bucket dumped, Fig. Lis ayiew in front elevationl of the sheave over which the holding chain operates, and Figs. 5 and'6 are views .in side holding chain in different positions thereon. The excavating device herein shown 1s of the same general type as, and an improve`v ment on, the excavating device shown in my Patent No. 1,194,777, dated August 15, 1916,

and its general method of operation is substant'ially the same. The particular features of diiierence between this device and the one shown in-said patentlwill be particularly Referring .to' vthedrawings, 5 indicates a cableway provided with the usual means wlierebyi-t may be tightened and slackened. This cablewayis similar to the one shown vinmy prior patent referred to above'. The" present device has been found particularly useful in excavating gravel pits .and yfor similar purposes where it is sought 4to dump the material from many successive bucket loads in a predetermined-position,.asin a hopper -l(not shown) arranged under the bucket, when it is in the position shown in Fig. 3. The general arrangement of the trolley with respect to the gravel pit, and the location of the hopper, are all shown in my prior patent, above referred to, and con# .sequently need-not be shown here, since the operation of the device in respect to these features, is substantially the saineas in said priorpatent. The bucket takes its load in the .usual wayA and may be raised by tightening the cable 5. After being loaded the bucket is pulled forward 'by any suitable means to the position where it' ris to be dumped. The inclination of thecableway 5 is such that the bucket will run down to the point at which it'is sought to have it work, and therefore there is required no mechanism for hauling it in a backward direction in this particular instance. `M0unted vupon the cableway 5 is a trolley whichmay be ofany desirable form, here shown as'a 8 running upon' the cableway. vAttached to the underside of the trolley is abail 9, to

y 1,485,87- PATENT OFFICE.

triangular frame 7 carrying rollers or wheels which is swivelled 'an excavating shovel 10,' the point of the pivot preferably being bevhind the center of gravity of said shovel.

The bail 9A may be of -any Suitable form' and is here shown-as formed of two chains sepallower ends by means of the" spreader bar 9.

rated near their 11' indicates the hauling holding chain thereof, 'and 13 is the loading line o r main hauling line, to. which the holdchains, 12 is the ing. chain 12 and the two hauling chains 11 vare attached, as is common practice in the Page buckets now used for. excavating, purposes.

In'the device here shown, the holding chain 12, runs over a block 15 attached to the trolley 7. The novelty in the present case lies in the particular construction and operation of this block 15 and the holding chain 12. These parts, and operation thereof, will now be described more i-n particular.

The .block 15 is attached to the vunder side of the trolleyl 7. Over this block runs the holding chain 12, the forward end of whichis secured to the main hauling line or loading line 13. From this point it runs upwardly and backwardly over the block 15A andv thence is led downwardly tov the upper forward part of the bucket, where it is attached at the center as indicated by 14. The

block 15 is provided with a double-grooved sheave 15', shown removed from the block' i in Fig. 4. -The two grooves of this sheave are concentrically arranged, one being larger 4than the other.' I have indicated the smaller' ioo rest of the holding chain 12 is large enough so that it will not pass between the disks `7S,

the holding chain 12 attached to the end of the yloading line or main hauling line 13, so

y that but-a slight tautness on said hauling line 13 will serve to maintain sufficient tension on 'the holding chain 12 to prevent dumping of the shovel. As soon as the tautness of the hauling line 13 is released, even though slightly, permitting the shovel to tilt, the locking bar 81 is moved to a position belowV the sheave 15', as shown in Fig. 6, thus causing the holding chain 12 to run up on the larger groove 77 of the sheave, and thus destroying the leverage -referred to above.-

I point where the dumping is to occur.

The operation of the device is as follows. 16 is a sheave carried preferably at the point where the holding chain 12 joins the loading line 13. Aarope 17 connected to the trolley 7 runs under the sheave 16 and up to another sheave 18, which runs on the cableway 5. 19 is a stop-block on the cableway at t-le s the bucket is drawn forward, the sheave 18 strikes this block 19 and is pushed back to- Ward the trolley, thus shortening the bight in the rope 17 and drawing the trolley 7 forward. The bucket in this position, after engagement with the sheave 18 with the block 19, is shown in Fig. 2. The result is that both of the hauling chains 11 and the holding chain 12 are slightly slackened, thus pcrmitting the front of the bucket to descend. As soon as this occurs, the locking bar 81 moves out of the sheave 15 to the position shown in Fig. 6. -As soon as this occurs, the leverage existing in favor of holding the bucket in its horizontal position, is destroyed, as explained above. 4When in this position the bucket may be dumped by slackeningaway slightly on the hauling line 13 thus giving a little slack` to the holding chain 12 to permit /full and'complete dump` ing of the bucket. The bucket in complete dumping position is shown in Figure 3. It is to be particularly noted that the position of the locking bar 81 on the smaller groove .76, as shown in Figure 5, assists in preventing the dumping of the bucket. When the locking bar is in this osition, only a very slight tension on the auling rope line 13 will prevent dumping. When the sheave 18 engages the block 19" the trolley 7 is pulled forward. .This permits the bucket to tilt far,

enough to release the locking bar, whereupon the bucket may be readily dumped by ,a

i ,essere slight slackening of the hauling line. @nly enough engagement between the sheave 18 and the block .19 is required in order to ad- .vance the trolley 7 forward enough to give enough slack in the holding chain 12 to per-. -mit the locking bar 81 to come out of thev sheave 15,`as shown in Figure 6. 1 In the foregoing specification, l have shown how the engagement of the sheave 18 with the stop 19 servesto pull the trolley- Abucket canV be dumped by slackening away For example, the rope 17, sheavel ontbe main hauling line 13 sufficiently to cause enough slackemng of the chain 12 to permit the locking bar 81 to move out of the sheave 15. Obviously, however, if the sheave 18 and stop 19 and their associated parts are dispensed with, considerably more slackening of the hauling line 13. is required atthe start to release the locking bar.

embodiments of my invention, it is to be understood that'it is capable of many modifications. Changes, therefore, in the construction' andarrangement may be made without departing from the spirit and scope of the invention asdisclosed in the appended claims, in which it is my intention to claim allnovelty 'inherent `in my invention as broadly as possible in view of the prior art.

- What I'claim as new and desire to secure by Letters Patent, is :l 4

1'. In an apparatus of the character set` forth, the combinationof a main cable, a

.carriage movable thereon, a scraper bucket pivotally mounted on said carriage in the rear of the center of gravity of the bucket when loaded, a hauling line for pulling the bucket along saidmain cable, a block attached to the carriage, a holding chain running from 4the front of the bucket over said block. to the hauling line, means arranged in connection with said block whereby av leverage in favor of the end of the holding chain attached to the hauling line is established-whenthe bucket is in loadretaining position and destroyed when said Thile I have shown and described certain` bucket is in partial or-complete dumping position, and means engaging said hauling line in advance of said bucket operating -at a predeterminedpoint `to accelerate the movement of said carriage'along said main cable relative to the movement. 'of said hauling line. foithe purpose set forth.

2. A block provided with asheave having two concentrically arranged grooves of different sizes, in combination with achain adapted to run over the larger groove thereof and provided with a locking bar adapted to run down on the smaller groove thereof.

" over the smaller groove and the largepar't 'Ii 3. Inl'a'device of the class described, the

combination with a.. suitable shovel, vof supporting means pivoted thereto behind the ...center of gravityl thereof, hauling means pivotally secured to the front of the shovel,

a block with a double-grooved sheave attached to the supporting eans, one of the groovesl being larger thanthe other, and a holding chain running- -from the front of said shovel over said sheave tothe hauling. means, said holding chainhaving a smallv part adapted ,to run over the smaller groove of the double-grooved sheave and a Alarge part adapted to ru'n up on the larger groove thereof. Y f

4. A block provided vvith a sheave having.V twoconcentrically arranged grooves of difl ferent sizes. vin 'combination with a chain comprising asmall part and a lar e part,

thesmaller part ofthe chain adapte to run of' the chain adaptedjto, run up on the -larger groove.

5. In @device of theeiaspgde'seribed, the, combination with a suitable shovel ,'ofs u porting means pivotedl thereto behind t e` Ycenter ofjgravity f thereof, hauling means ,pivotally secured .to the front ofthe shovel,"4

` a block with a double-grooved sheaveatl to the` supportingmeans, lone of the Si ooves being iarger than the other, and a .holding chain runnin from the 'front of said shovelover said *s 'leave Lto thejhauling means, saidlholdingchain being-of v'suiicient .size to run oni the'larger groovel of said double-grooved sheave .and vprovided with al locking bari-small ,enough to' run .down onl the smaller groove ofsaid sheave. 6.A In. an apparatus ofthe character 4set forth, the combinationI of a main cable, a

' carriage movable thereon, a scraper. bucket pivotally mounted-v on--said carriage' in the rea-r ofthe center of gravity of thebucket fivhen loaded, a hauling line for pullingthe bucket along said main Acable,a block attached to the carriage, a holding chain running `from the front of the bucket directly fovemaid bleek to the hauling' une, and.

. In forth, the Yco inbination .of a -rnain cable,A 'av carriage mva b'le thereon, a scraper bucket' -means arranged in connection with4v said block whereby a leverage in favor of the end v ofthe holding chain attached,V tothe hauling line is established when the bucket is in'load- I {,rctaining positionI and ,destroyed "when said bucket rpartial orV complete dumping vpositionlgv Y. 'an `v-apparatus of the character set i -pivotallyniountedon said'vcarriagein the rearof the' cen-ter of: gravity of the bucket" When loaded, la hauling line for pulling the` f bucket along said -niain cable, a `block at? j tached to the' carriage, 'a holding chain run-r ning from the 'front of the' bucket over saidblock to thl'euhauling'line said block' 8. In an apparatus of the character set ,forth', thel combination of a main cable, a carnage movable thereon, a scraper bucket pivotally mounted -on said carriage inthe rear of the centerof gravity of they bucket when loaded, a haulin *line for pulling the bucket along said main cable, a block attached to the carriage, a holding chain running fromthe front of the bucket directly'v over Said blockto the hauling line, means y ,arranged in connectiony With said block Wherebya leverage in 'favorof the end bf vthe holding chain attached to the hauling- .line is established `When 4the bucket is in vload-retaining position and destroyed when 'said bucketjis in partial or complete, dumping. position, andl means engaging :saidhaul-A .y ingv line .in 'advance of 'said' bucket operating 4at a predetermined point to accelerate the't'novement ef said carriage along said. 'main' cable relative to the movement of said hauling line, for'thepurpose set forth.y 9;,.Ifn ,an apparatus of the 'character set forth, the combination'of a main cable, a

carriage'- movablev thereon, a scraper bucket pivotally "mounted on vsaid carriage in the rear' .ofthe center'of gravity of the bucket when loaded, a hauling line-for pulling the bucket alongfsaid main cable, `a block atalst tached to the carriage, a holding chain run- '-ning from -theffro'nt of the ybucketover said block tothe hauling line, said block so lcon- -structed that a leverage'in 'favor-of the end .of 'the holding chain attached to the hauling l line is' established when l the 'bucket l is in.

load-retaining position and destroyed when said bucket is' vin partial' or complete dumping position, andl means 'engagingfsaid hauling line advance of'said bucket operat- .ing at a' predetermined polint to. accelerate they lmovement "of ,said ,carriage along said. l main cable relative 4to the movementof said lhauling line, for the purpose set forth.

forth,- the combination of armainpable, a

carriage movable thereon, a scraper bucket pivotag-llymounted on said carriage in the 'rear .of thccenter of' gravity of the bucket tached lto.thecarriage', a holding rchain run-` Ining from l'the front of the bucket. directly ovensaid block to the 1hauling line, means arranged `in 'connection with said block Whereby'a leverage-in favor of the end of theholding chainattached to the.v hauling line is establishedfwhen the bucket is in loadretain-ing position and destroyed when said 10. In an apparatus of the character sety when loaded, a-hauling line for pullingthe ',bucket along' said main cable,- :a block -atbucket is in partial or complete dumping position, a block running on said main cable, a stop on said cable on the path of movement of said block, and a cable connected with said block and carriage and operatively engaging said `hauling line vtor the purpose set forth.

y 11. lIn anapparatus of the character set forth, the combination of a.v main cable, a carriage. movable thereon, a scraper bucket pivotally mounted on said carriage inthe rear of the centerof gravity of the bucket when loaded, ai hauling line for pulling lthe bucket along said main cable, ablock at tached to the carriage, a holding chain running from the front of the bucket over said block tok theliauling line, said block so constructed that a leverage in favor otl the endA of the holding chain .attached to the hauling line is established when the bucket is in load-retaining position andfdestroyed when said bucket is vin partial :or complete dumping position, ablock runningon said.

main cable, a stop on said cable on thepath of movement of said block, and a cable con- .nected With' sai-d block and carriage and -operatively engaging said hauling line for the purpose'set -forth.

12. In a device of the class described, the, combinationfwith a suitable shovel, of supporting means pivoted thereto behind the center of gravity thereof, hauling vmeans pivotally 'secured to the front of the shovel, ablock attached to the supporting means,

a holding-chain running fromthe front of the shoveldirectly over said block'to the hauling means, and means 'arranged in connection withl said block for establishing 1a leverage in favor of the end of the holding establish a leverage in favorof the end of :the holding chain attached `to the hauling meanswhen theshovel is in a horizontal position and destroysaid leverage as the shovel commences to'tip.

@"14. A block provided with a she`evevhav-` ing two concentrically arranged grooves of different sizes, 1n combina-tion Witha cham,vv

runnigover said sheave, a portion of said chain being adapted to run over the larger 4groove of .the sheave, and a member connecting said first referred to portion of chain with a secondportion thereof, said connecting member being adapted to run on the smaller grooveof said sheave.V

Witness my hand and Sear, this 20th day of November, 1922.

' JOHN W. PAGE; 

